From 711b2e1f48316d80853635408c518e3562a1fa37 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Na=C3=AFm=20Favier?= <n@monade.li>
Date: Mon, 20 Jun 2022 04:15:38 +0200
Subject: Fix flake input completion for `InstallablesCommand`s

Defers completion of flake inputs until the whole command line is parsed
so that we know what flakes we need to complete the inputs of.

Previously, `nix build flake --update-input <Tab>` always behaved like
`nix build . --update-input <Tab>`.
---
 src/libcmd/command.hh | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/libcmd/command.hh')

diff --git a/src/libcmd/command.hh b/src/libcmd/command.hh
index cab379b84..ffa8e784f 100644
--- a/src/libcmd/command.hh
+++ b/src/libcmd/command.hh
@@ -77,12 +77,16 @@ struct MixFlakeOptions : virtual Args, EvalCommand
 {
     flake::LockFlags lockFlags;
 
+    std::optional<std::string> needsFlakeInputCompletion = {};
+
     MixFlakeOptions();
 
     virtual std::vector<std::string> getFlakesForCompletion()
     { return {}; }
 
     void completeFlakeInput(std::string_view prefix);
+
+    void completionHook() override;
 };
 
 struct SourceExprCommand : virtual Args, MixFlakeOptions
-- 
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